Grandma Zhao Yanhong, whose mental state is "30 years ahead of her age," refuses to admit defeat, is fearless, and loves to cause trouble! After meeting the genius but ultimately useless Wu Youwei, who "would rather lie down than sit," she becomes involved with the Rubik's Cube, and together with her mentor, best friend, and family, stumbles and bravely ventures into the "Rubik's Cube world"! What kind of magic will she achieve after picking up a Rubik's Cube at 70? What bizarre opponents and chaotic unexpected events will she encounter...?

Fang Zhen Dong is a patrolling officer in Beijing who one night meets the drunk Li Pei Ru while singing karaoke at the KTV place. Li Pei Ru is a real estate agent from Hong Kong who has vowed to make her fortune in the cosmoplitan Beijing, but is caught up in the complexities of life and ends up becoming a mistress of a married man.